Tuyere



a 9, 1932- J. c. HOPKINS, 1,870,511

TUYERE v 'Filed Aug. 28, 1951 2 Sheets-Sheet 1 I i Z W t I/1 45 [TLUTZOTZ JOHN C'. HOPK/NS Adz. 9, 1932- .J. c. HOPKINS TUYERE Filed Aug. 28. 1931 2 Sheets-Sheet 2 cg. J.

Patented Au 9, 1932 UNITED STATES PATENT OFF'lCE JOHN C. HOPKINS, 03 LAKEWOOD, Q1110 Application nee-An us: as, 19:1. serial 30. 560,029.

This invention relates to blast furnace tuyeres. Such tuyeres are made with but one gas passageway which directs gas into the furnace in the form of a solidli'last. ThlS 3 has a tendency to leave inactivespots between I adjacent tuyeres, where the furnace reactions take place slower than in the re ion of the blast, the gas tending to pass t rough the furnace charge at the tuyere level in as many 10 soild streams as there are tuyeres. It is the inventors intention to provide a tuyere wh1ch will eliminate this undesirable condition. ()ther objects may later become apparent.

Broadly speaking, a tuyere constructed in i accordance with this invention is characterized by having a plurality of discharge orifices openin from angular assageways so that gas is scharged into t e furnace in a number of streams traveling in diflerent di- 90 rections. An example of such a construction is shown by the accompanying drawings, of which:

Figure l is a longitudinal cross-section. Figure 2 is a cross-section taken on the 25 line 11 -11 of Figure 1.

Figure 3 is a longitudinal cross-section of 7 another form of the invention.

Figure 4 is an end view of the form shown in Figure 3. 80 Figure 5 is a cross-section on the line V--V of Figure 4.

Figure 6 is a modified form of the section shown in Fi re 5.

Having re erence to these drawings, there is shown a tuyere having) the usual body portion 2 and water cham are 3. This tuyere does not have the sin le gas passageway enerally provided but as, instead, a plura ity of discharge orifices 4 communicating with short gas passageways 5. It will be noticed that these gas passageways are angularly inclined with respect to the axis of the tuyere body. This construction results in the dischar e of a number of fine streams of gas in the urnace covering a wide spread area. Water chambers 6 are arranged around each of the passageways 5 and are in communication with the water chambers 3, adequate cooling oi the various parts thereby being assured. In this particular instance the in 'rality of clination of the passageways 5 does not necessarily directly reduce the spreading action of the gas but the large number of discharge orifices breaks up the solid stream of gas.

However, Fi res 3 and 4 show a construction in which t e passageways 5 are featured by their length, so that the inclination of these passageways directly results'in a number of distinctly directed small streams of gas or blasts which penetrate to every portion of the furnace.

This last construction might be further modified as suggested by Figure 6, in which the walls of the passageways 5 are given a. swir the discharged as having a rotative motion as well as being roken up.

Various other shapes will readily suggest themselves to one .w 0 has read the foregoing and, in view of this, it is to be understood that the specific examples here shown are in accordance with the patent statutes, and are not shown with the intention of limiting this'invention exactl thereto, except as is defined in the appen ed claims.

\ I claim:

1. A tu ere comprising a, double walled hollow 3' portion forming a water jacket and a double walled nose portion integral with said body portion and communicating therewith to permit the circulation of 0001- ing water through said body portion and said nose portion, said nose portion having a plu- -ra1ity of passageways extending therethrough and communicating with said hollow body portion. v

2. A tuyere comprising a double walled hollow body portion forming awater jacket and a double walled nose portion integral with said body portionand communicatihg therewith to permit the circulation of cooling water through said body portion and said nose portion, said nose portlonhaving a pluassageways extending therethrough and communicating with said hollow body portion, at least some of said passageways ing disposed at an angle to the arcs of said tuyere.

3. A tuyere comprising a double walled hollow body porti-onforming a water jacket and a double walled nose portion integral m? with said body portion and communicating therewith to permit the circulation of coolin water through said body portion and sai nose rtion, said nose portion having a U plural y of passageways arranged radially around the central axis of said tuyere and extendin through said nose into communica- 7 tion w th the hollow body of said tuyere. l 4. A tu ere comprising adouble walled 10 hollow portion forming a water jacket and a dou 1e walled nose portion integral with said body portion and communicating therewith to permit the circulation of cooling water through said body portion and said nose portion, said nose portion having a plurality of passageways arranged radially around the central axis of said tuyere and extendin through said nose into communication with the hollow body of said tuyere, and 99 another passageway extending through said nose on the axis of said tuyre. In {testimony whereof, I have hereunto set my hand.

JOHN C. HOPKINS. 

